Go into whatever topic you want to bookmark. Near the bottom of the page, there is a link that has "Psypoke Forum Index" and two other links. Click "Bookmark topic" to add that topic to your bookmarks. To access your bookmarks, go to your User Control Panel. Along the left-hand side (under Overview, which is what the "User Control Panel" link should default to), there is a "Manage bookmark" link. Click on it to see your bookmarks and delete any you don't want.